Foot spa



FIG. 1 is a rear, top, and right side perspective view of a foot spa showing our new design;

FIG. 2 is a front, top, and left side perspective view thereof;

FIG. 3 is a front, bottom, and left side perspective view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a rear view thereof; and,

FIG. 9 is a front view thereof.

The features shown in broken lines depict unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a foot spa, as shown and described. 